William noble



(No Model.)

W. NOBLE.

EEED WATER HEATER. No. 897,870. Patented Feb. 12,1889.

NITE

WILLIAM NOBLE, OF MILI'VAUKEE, IVISCONSIN, ASSIGNOR OF ONEIIALF TO WILLIAM Il. WOLF AND THOMAS DAYIDSON, BOTH OF SAME PLACE.

FEED-WATER H*ri-'.NTERi SPECIFICATION forming part of Letters Patent No. 397,870, dated February 12, 1889.

Application inea my 27, 188e.

To aZZ '//fzo'nt it may concern:

Be .it known that I, IVILLIAM NOBLE, acitizen of the United States of America, residing at Milwaukee, in the count-y of Milwaukee and State of lVisconsin, haveinvented certain new and useful Improvements in Feed `Water Heaters, of which the following is a specilication, reference beinghad therein to the accompanying drawing.

)ly invention relates to that class of feedwater heaters wherein the waste products of combustion are utilized to raise the temperature of the water before the water is admitted to the boiler, and particularly to that class of r 5 heatei s having a coiled water-pipe located within the smoke-stack or chimney.

'lhe invention will first be described in connection with the accompanying drawing, and then pointed out in the claims.

The accompanying drawing is a longitudinal section of a furnace and boiler of ordina-ry construction with my invention applied, the boiler-tlues and wateiepipes and pump being in elevation.

Referring to the drawin A represents the furnace, l; the boiler, C the chimney or stack, I) the dome, and Il the pump, all of any ordinary construction.

Il represents the water-coil, located in the 3o furnace stack orchimneyas lowdown as pos sible without interfering` with the cleaning of the boilerstlues, and'low enough so that its lower end will lie below the water-line in the boiler.

Connected with the lower end of the coilis a pipe, G, which leads out through the stack and to one side of the boiler, where it joins a vertical pipe, H, exteiuling down alongside the furnace, the latter pipe in turn connecting 4o with the horizontal main pipe I, leading from the pump, located, preferably, in .rear of the boiler. At any suitable point on the main pipe I, I connect the feed-pipe J, which enters the boiler at any desired distance below the waterdine.

From the upper end of the coil a horizontal pipe, II, leads out through the stack and to one side of the boiler nearly to its rear end,

where it joins onto a vertical pipe, L, to the 5o lower end of which is connected a short horizontal pipe, M, which in turn is connected to Serial No. 281,217. (No model.)

a short vertical pipe, N, in open communication with the main pipe I.

In order to govern the flow of water through the various pipes and to constantly maintain water in the coil, I locate the valves as follows: I provide pipe N with a globe-valve, I, and pla-ce a check-valve, in pipe H. I also provide pipe I near pipe N with a globe-valve,

2, and in this pipe, between valve SZ and the 6o feed-pipe J, I locate another check-valve, V. Between check-valve Y and the feed-pipe I connect a drip-pipe, O, which I provide with a globe-valve, 3, and for the purpose of draining pipe L, I provide it at its lower end with a drip-cock, it.. The feed-pipe J also is provided with a globe-valve, 5.

The operation of my invention is as follows:

In order to feed water tothe boiler through the coil, globe-valve 2 is closed and globe-valves 7o l' and 5 are opened. rlhen, when the pump is put in operation, the water will be forced up through pipes KILL, and K and into the coil F, froni which it will Aiiow through pipes G, H, I, and .I into the boiler. Of course, as soon 7 5 as the pumping ceases the check-valve V will close and hold the water above it, when, should there be no pressure of steam in the boiler, the wat-er will flow through the coil until the water-level is the same in the boiler and coil. 8o On the other hand, however, when there is steampressure the water will be thereby forced backward in the coil and over into pipes K and L, thus keeping them, as well as the coil, full of water all the time that steam is up.

If at any time a direct feed would be de sirable, the boiler may be fed direct through pipes I and J by closing valve I and opening valves 2 and 5, as will be apparent, in which 9o case the coil and its connected pipes will be kept supplied with water bythe means above indicated.

The whole system of pipes may be drained by opening valves 3 and -;l.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l.. The combination, with the smolie-stack or chimney, the boiler, and the pump, of the 1o@ coil so located in the stack or chimney as that its lower end will be below the water-line in the boiler, the main pipe leading;I `from the pump7 the feed-pipe Connected with the 11min pipe and entering1 the boiler below the waterline, the pipes Connectingl the main pipe with the lower end el the eoil, the pipe-eoilneetion placing' the upper end oi the eoil in communication with the main pipe between the pump and the feed-pipe, a` eheekevnlve loez'lted in Said pipe-Connection, and a globe-wireleen'ted in the main pipe between the Vfeed-pipe sind the pipe-eenneetion` for the purpose Set forth.

Q, The Combination, with the smoke-stack or ehim n ey, the boiler, un d the pump, ot the coil so located in the steek or chimney :1s that its lower end will be below the wflter-line in the boiler` the malin pipe provided with a i globe-Valve mid u (1heek-\';1l\'e between ihe ln testimony whereotl l :Lftix my Signa-ture in 3o presenee of two witnesses.

WILLIAM NOBLE.

W itnesses:

lHoMAS XV. SHERIFF, Jol-IN TAMBLE 

